fixed overhead projector的意思|示意
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固定投影仪
fixed overhead projector的网络常见释义
固定投影仪 就我所知,他值得信赖 » As far as I know, he is worthy of trust 固定投影仪 » fixed overhead projector 这位科学家试了好多次，最后成功了 » The scientist tried many times finally succeeded ..